MESON Chess Problem Database

Problem Display
PID: 17535 (3N1Q2/B1pPr1p1/1pBk2Pp/6pR/2pPp3/2p1K3/2P5/8 w - - 0 1)

Kardos, Tivadar

Parallele 50, 1947

3N1Q2/B1pPr1p1/1pBk2Pp/6pR/2pPp3/2p1K3/2P5/8

#2

10 + 10

6480 Tividar Kardos: 200 ausgewahlte Schachprobleme 1983
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...g4
      • 2.Rd5#
    • 1...b5
      • 2.Bc5#
  • Tries
    • 1.Ke2?
      • 1...g4
        • 2.Rd5#
      • 1...b5
        • 2.Bc5#
      • 1...e3!
    • 1.Kf2?
      • 1...g4
        • 2.Rd5#
      • 1...b5
        • 2.Bc5#
      • 1...e3+!
    • 1.Sb7+?
      • 1...Ke6
        • 2.d8S#
      • 1...Kxc6!
    • 1.Bb8?
      • 1...g4
        • 2.Rd5#
      • 1...b5!
    • 1.Qf4+?
      • 1...Re5
        • 2.Qxe5#
      • 1...gxf4+!
    • 1.Qf5?
      • threat
        • 2.Qd5#
      • 1...Rxd7
        • 2.Qe6#
        • 2.Qxd7#
        • 2.Qe5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Re6
        • 2.Qxe6#
      • 1...Rf7
        • 2.Qe6#
        • 2.Qe5#
      • 1...Re8!
    • 1.Qf6+?
      • 1...Re6
        • 2.Qxe6#
      • 1...gxf6!
    • 1.Qe8?
      • 1...Rxd7
        • 2.Qxd7#
        • 2.Qe5#
        • 2.Qe6#
      • 1...g4
        • 2.Rd5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Re6
        • 2.Qxe6#
      • 1...Rf7
        • 2.Qe5#
        • 2.Qe6#
      • 1...b5
        • 2.Bc5#
      • 1...Rxe8!
  • Keys
    • 1.d5!
      • 1...Kc5
        • 2.Qxe7#
      • 1...Ke5
        • 2.Qf4#
      • 1...g4
        • 2.Sb7#
      • 1...b5
        • 2.Sf7#

This anticipates 206203(1970)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATE::R1(D)
    • P(e);OGATE::B(G)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(d);OGATE::R1(D)
        • P(e);OGATE::B(G)
      • Refutation
        • P(c);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(d);OGATE::R1(D)
        • P(e);OGATE::B(G)
      • Refutation
        • P(c);CHECK
    • Try
      • S(I);CHECK
      • Vars
        • K(f);N_SPINR(i),P-FLIGHT::P=S
      • Refutation
        • K(f);N_SPINR(i),P-FLIGHT,XB(E)
    • Try
      • B(G);P_PINP(h)
      • Vars
        • P(d);OGATE::R1(D)
      • Refutation
        • P(e);
    • Try
      • Q(J);CHECK,N_PINR(i)
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAB1(J),XR(i)
      • Refutation
        • P(d);CHECK,XQ(J)
    • Try
      • Q(J);N_PINR(i)
      • Threat
        • QAR1(J)
      • Vars
        • R(i);N_GUARD::QAB1(J),XR(i)
        • R(i);N_GUARD::QAR1(J),XR(i)
      • Refutation
        • R(i);
    • Try
      • Q(J);CHECK,N_PINR(i)
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAR1(J),XR(i)
      • Refutation
        • P(j);XQ(J)
    • Try
      • Q(J);N_PINR(i)
      • Vars
        • P(d);OGATE::R1(D)
        • R(i);OGATE::QAB1(J),XR(i)
        • R(i);OGATE::QAR1(J),XR(i)
        • P(e);OGATE::B(G)
      • Refutation
        • R(i);XQ(J)
  • Actual
    • P(C);
    • Vars
      • K(f);P_SPINP(e),S_FLIGHT::QAB(J),XR(i)
      • K(f);N_SPINR(i),P_SPINP(d),S_FLIGHT::QAB1(J)
      • P(d);::S(I)
      • P(e);::S(I)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).